Spring construction.



G. C. SHOEMAKER.

SPRING CONSTRUUTIO APPLICATION FILED JAN. 2 9.

G. G. SHOEMAKER.

' SPRING CONSTRUCTION. APPLICATION :ILED'JAN. 20, 1909.

' Patented Oct. 5; 1909.

Elvwenfoz 3 SHEETS-SHEET 2.

G; G. SHOEMAKER.

SPRING CONSTRUCTION.

APPLICATION FILED JAN. 20. 190s.

Patented Oct. 5, 1909.

3SHEETSSHEET 3.

y when the structure is ficing any of the f i s r s' PATENT orr cn.

orene s e. snoesnaann. or wssnrneroit, premises or consume. ASSIGNOR T0 seems summon orients GQMPANY, or JAGKSON. MIQHIGAN. arms commencement.

ceases.

To all whom it may concern:-

Be it known that a citizen of the Un'ted States, Washington, in the District of have invented certain new and useful Improvements in Spring Constructions, of which the following is a specification,

L This invention relates to spring constructions.

Que object of the invention is to-provide a spring construction for automobile or other seats embodying such characteristics that the rider of the structure will not be injured or inconvenienced by reason of contact with the support upon which thestructure is mounted in the event that the seat should be unduly compressed or jarred incident to the weight of a heavy rider or by reason ofthe vehicle contacting with an obstruction in the road way.

Another object is to reinforce the main springs of the structure with one or more arch springs adapted to be compressed only subjected to unusual weight, whereby the auxiliary springs will catch the extra weight and prevent the structure from being wholly compressed, the arch springs being so mounted that when compressed there will not be a noise nor a spreading of the main frame of the struc ture.

With the residing at Columbia,

above and other objects in view. the present invention consists in the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and particularly pointed out in the appended claims, it being understood that changes may be made in the form, proportion, size an minor details without departing from the spirit or sacriadvantages of the invention.

In the drawings :Figure 1 is a top plan view, of my invention. Fig. '2 is a longitudinal sectional view. Fig. 3 is a detail perspective View of the clamping late to which the feet of the preferred orm' of auxiliary spring are secured. Fig. 4 is a fragmentary plan view of a spring construction embodying a modified form of clip to which the preferred auxiliary spring may be secu'r i. Fig. 5 is a detail perspective view of ti: modified clip or plate to which the prefer .d form of spring may be secured.

Fig. 6 is a.\fragmentary top plan view of a I, Gnome C. SHOEMAKER,

:beyond the sides of the rigidly secure the feet 7 of the Patented Oct. 5,

form of auxiliary spring. Fig. 7 is a; detail perspective View of the modified auxiliary spring illustrated in. Fig. 6. Fig 8 is a fragmentary top plan view of a third media fication. .Fi 9- is a detail perspective view of the modi 'ed auxiliary spring illustrated in Fig. 8. Fig. 10 is a fragmentary to plan view of a fourth form of invention. 11 is a detailperspective View of the modified auxiliary spring illustrated in Fig. 10.

Referring now to the accompanying drawings, the reference characters 1 and 2 indicate upper and lower edge wires of the frame which may be of rectangular or any other formation. Q.

Disposed within the frame are spring sup, porting wires 3 u on which. are mounted main springs 4, an which are secured to the supporting wires by means of any suitable type of clips 4. The body ,5 of each arch spring extends nearly across the construction, but prior to reaching the sides thereof, it has its opposite ends directed downwardly and inwardly upon an incline to'folmthe downwardly converging legs 6, which terminate in substantially horizontally disposed feet portions 7, the feet being disposed beneath the body 6 of the corres ondin auxiliary springs. It will thus he umfb that the auxiliary springs do not'extend to the sides of the structure,ond that therefore, when they are compressed subsequent to the initial compression of the main springs, theends of the auxiliary springs cannbt project structure or 11'). no way cause a truss action between the auxil iary springs and the frame. As a matter of fact,'if the pressure falls'upon-the auxiliary springs substantially intermediate their ends,

at the topsof their legs 6 tend to draw to ward each other rather thah'project outwardly toward the edge of the frame. I auxiliary, springs immediately beneath the body 6 thereof, in order to obviate the ab;

tioned truss-or spreading action of the frame or the projection of the auxiliary springs beyondthe latter, and by rigidly mounting the feet in the structure, I obviate noise when the auxiliary springs are compressed. The feet 7 of the auxiliary springs may be secured inthe frame in any suitable manner, but one method fox, securing the feet fixedly rstood t ve-nienspring construction illustrating as is usual, the ends of the auxiliarysprings to the structure resides in the employment of plates 8 which have their ends bent to provide grooves 9 to embrace adjacent supporting wires 3. These plates are disposed nn mediately beneath the feet 7 and are clamped thereto and upon the corresponding supportin wires by means of rivets or other suitabIe means lO, as clearly shown in the accompanying drawings. 10 Under certain conditions, it may be preferable to reinforce the action of the auxiliary springs, and if so, I may employ one or more coiled springs 11 and secure them in the frame in any suitable manner beneath the bodies of the auxiliary springs. If desired, the reinforcing or cushioning springs 11 may be secured at four points to the corresponding main springs by means of suitable clips 12, as shown in Fi 1, and said cushioning; springs 11 may be e iminated from the structure altogether, if desired.

In Figs. 4 and 5 there is illustrated a form of auxiliary spring 13 similar to the auxiliary spring illustrated in Figs. 1 to 3, in-

elusive, but there is shown a different means for fixedly mounting the ends of the auxiliary spring13. For instance, I employ the endless supporting wires 14 for the main springs of the structure, whose parallel 3 members 15 are connected by the double ended clip 16, towhich latter the feet 7 of the auxiliary spring 18 are secured by a rivet or any other suitable means 17.

In Figs. 6 and 7 I illustrate a modified form of auxiliary spring composed, of a single piece of wire bent to provide the spaced body portions 18, the leg portions 19 and feet. portions 20. I thus provide a pair of auxiliary. springs between adjacent rows ofmain springs 4L,- forming the pairs of auxiliary springs of .a single piece of wire, with the opposite ends 'of the wire coupled together by means of a suitable sleeve 21, as shown. It -.will be seen that the feet portions 20 in this third modified form are slightly bowed at 22 and at their bowed portions are secured to the supporting wires 3 by means of suitable clips 23. Substantially the i only difference between this form of 0 auxiliary spring and thc lirst two forms is that in the third form the auxiliaries are formed of spring wire instead of flat spring metal. The parallel members 18 of this third form may beutruly regarded as the body portionof the auxiliary spring provide'dat each end with a leg-.19 and a foot 20 for the same may be considered as a pair of auxiliary springs, each spring of each pair having a leg and time portion. The third mentioned auxiliaries. perform the same function as outlined in the other forms of the invention described.

In Figs. 8 and 9, the auxiliary springs 24 are the same in formation as inthe third described form of the invention, the only material and each includes one or more legs at its opposite ends which incline inwardly and terminate in feet portions, which latter are adapted to be secured in any suitable manner to the supporting wires of the structure with the ends of the body portions of the springs terminating short of the frame of the structure, so that upon compression of the auxiliary springs they will not be projected beyond the body of the frame or cause a spreading of the latter, and as hereinbefore intimated, by fixedly mounting the feet portions of the springs within the frame in spaced relation of the latter, there is not a noise caused incident to compression of the auxiliaries. Hence, all of the auxiliary springs possess the same functional characteristics. If desired all of the modified types of auxiliary springs may have a spring beneath them as in the first form, but in view of the illustration in Figs. 1 and 2 it is deemed entirely unnecessary to illustrate the reinforcing spring 11 in the modified forms.

What is claimed is i 1. In a spring construction, a frame, main springs in the frame, and an auxiliary arch spring in the frame to catch the extra weight having its ends fixedly mounted within the f nine and in spaced relation to the latter.

2. In a spring construction, a frame, main springs in the frame, and an auxiliary arch spring 'to catch the extra weight having its ends terminating beneath its body portion with said ends and the body portion in spaced relation to the frame, the ends being fixedly mounted within the frame in spaced relation thereto.

3. In a spring construction, a frame, main springs in the frame, and auxiliary arch springs in the frame between adjacent rows of main springs to sustain extra weight,each auxiliary spring having its ends fixedly mounted within the frame and in spaced relation to the latter.

4. In a spring construction, a frame, main springs in the frame, auxiliary arch springs in the framebetween adjacent rows of main springs to sustain extra Weight, each auxiliary spring having its ends fixedly mounted the latter, and means beneath each, arch springto cushion the latter.

5. In as spring construction, a frame, stipporting wires in the frame, plates connecting pairs of said supporting wires atopposite sides of the construction, an auxiliary arch spring in the frame to catch the-extra weight and provided at its ends with feet portions for engagement with said plates, and means for securing said plates and feet portions together.

6. In a spring construction, a frame, main springs in the frame, an auxiliary arch spring in the frame having its ends fixedly mounted in the frame and in spaced relation thereto, and means for cushioning the auxiliary spring. 7

7. In a spring construction, a frame, main springs in the frame, an auxiliary arch sprin in the frame having its ends fixedly mounted in the'frame and in spaced relation thereto, and a. spring beneath the arch spring for cooperation with the latter to sustain extra weight.

8. In a spring construction, a frame, main springs in the frame, an auxiliary arch spring in the frame to catch the extra weight, said arch spring being formed of a single piece of material and having its ends converging downwardly and terminating in feet portions, means for securing the feet portions against movement, and a spring beneath the arch spring.

9. In a spring construction, a frame, main springs in the frame, an auxiliary arch spring to catch the extra weight having its ends terminating beneath its body portion and fixedly mounted in spaced relation to the frame, the body of each auxiliary spring also being in spaced relation to the frame, and means for cushioning the auxiliary sprint 10. In a spring construction, a frame, main springs in the frame, an auxiliary arch spring to catch the extra. weight having its ends terminating beneath its body portion and in spaced relation to the frame, the body of each auxiliary spring also being in spaced relation to the frame, and means for securing the ends of the auxiliary spring against movement.

11. In a spring construction, a frame, main springs in the frame, an auxiliary arch spring to catch the extra weight having its ends terminating beneath its body portion and in spaced relation to the frame, the body of the auxiliary spring also being in spaced relation to the frame, means for cushioning the auxiliary spring, and means {for securing the ehds of the auxiliary spring against movement.

12. In a spring construction, upper and lower edge wires constituting a frame, main springs in the frame, an auxiliary spring in the frame havin its opposite ends terminating substantiaIly in the same plane as the lower edge wire, and means for securingsaid ends of the auxiliary spring against movement within the frame and 1n spaced relation to the lower edge wire.

13. In a spring construction, upper and lower edge wires constituting a frame, main springs in the frame, an auxiliary spring in the frame having its opposite end terminating substantially in the same plane'a's the lower edge wire, means for securing said ends of the auxiliary spring against movement within the frame and in spaced relation to the lower edge wire, and means beneath the auxiliary spring to cushion the latter.

14. In a spring construction, a frame, supporting wires in the frame, main springs secured to the supporting wires, and an auxiliary arch spring in the frame having its ends secured to the supporting wires upon which the main springs are mounted.

15. In a spring construction, a frame, supporting wires in the frame, main springs secured to the supportin wires, and an auxiliary arch sprin in t e frame having its ends secured to te supporting wires upon which the main springs are mounted, the arch spring extending in a direction at a right angle to the plane of said supporting wires.

16. In a spring construction, a frame, supporting wires in the frame, main springs mounted upon said supporting wires, an auxiliary arch spring in the frame between adjacent rows of main springs to sustain the extra Weight, said arch spring being formed of a single piece of material and having its ends converging downwardly and terminating in inwardly directed feet port-ions, plates connected to the supporting wires upon which the inwardly directed ends ofthe arch sprino are mounted, and means for securing said plates and ends of the archspring together.

17. In a spring construction, a frame, main springs in the frame, and an auxiliary arch spring in the frame to sustain extra weight, the a 'ch spring being formed of a single piece of material having downwardly converging leg portions and inwardly directed feet portions fixedly secured within the frame in spaced relation to the latter.

In testimony whereof I afiix my signature, in presence of two witnesses.

GEORGE G. SHOEMAKER.

lVitnesses JonN H. Sroonns, I).\Vll) R. \Vaonnn. 

